Electric hose-coupling



UNITED STATES PATENT OFFICE.

HOWARD SARGENT, OF CAMBRIDGE, MASSACHUSETTS.

ELECTRIC HOSE-COUPLING.

SPECIFICATION forming part of Letters Patent No. 499,254, dated June 13, 1893.

Application filed February 21, 1893- Serial No. 463,255. (No model.)

tion to be hereinafter more particularly point ed out. 7

The drawing shows in vertical section a full sized hose or pipe coupling provided with elec tric connections in accordance with this invention.

The half or portion at, having the internally screw threaded ring I) secured to it, and the half or portion 0 externally screw threaded tobe turned in said ring b, are I allof any usual or suitable construction. Through the shoulder a, of the half a against which the end of the hose abuts, an internally screw threaded hole is formed which receives a threaded plug (1?, of insulating material. The plug M, has a hole through it of small diameter for a portion of the distance which receives the covered wire a and of larger diameter for the remaining distance which receives a metallic cap a which is connected with the wire by a spring at. Thus the metallic cap is free to yield, yet a metallic connection is made with the wire. The metallic cap is designed to project below the abutting face of the shoulder a.

The adjacent screw threaded end of the other half or portion c is reamed out for a short distance, and preferably internally screw threaded to receive a thin threaded ring 01 of insulating material, which ring has an outwardly extended flange d which bears upon or against the end of the half or portion 0, and the inner surface of said ring (1 is likewise preferably screw threaded to receive a threaded metallic ring 6 likewise having an outwardly extended flange which bears upon or against the flanged end of the ring d. Thus the metallic ring 01 is completely insulated from the half or portion 0. The electric wire f, passes through the half portion 0 and its bared end is rigidly connected to said metallic ring 6. The rings 01 and e, are made so thin that when secured in position in the reamed out portion or half 0, the water way is not diminished. Also it will be seen that by connecting the wire a to the half or portion a, in the manner shown, the water way through said half or portion a is not diminished, thereby overcoming the most serious objection to electric hose couplings used in connection with hose signaling apparatus.

It is obvious that the metallic ring 6 may be secured to the half or portion 0 in a different manner, and insulated therefrom, so I do not desire to limit my invention to connecting said parts by providing them with screw threads as shown. Furthermore it will be seen that when the halves or portions are screwed together, the metallic cap or plug a will bear upon the flange of the metallic ring, rubbing along as the part c is turned, so that a rubbing contact is insured, and as the electric contact upon one part is yielding and upon the other is made circular, it is not necessary that the parts should always occupy the same relative position to insure electrical connection.

I claim In an electric hose or pipe coupling, the combination of the half a, with shoulder at, having a hole through it, the plug a*, of insulating material contained in said hole, also having a hole through it, electric wire a metallic cap (1 and spring a connecting said cap with the wire, and all contained in the hole in the plug (1 the half a reamed out at the end, the flanged ring 01 of insulating material, and the metallic flanged ringe secured to the ring cl and wire f secured to said metallic ring, substantially as described.

1 In testimony whereof I have signed my name to this specification in the presence of two subscribing witnesses.

HOWARD SARGENT,

Witnesses:-

BERNIOE J. NOYES, CHARLES B. CRooKER. 

